loktayt 620

Loctite 620

Loctite 620 is designed for bonding cylindrical mating parts. It prevents loosening and leakage caused by shock and vibration. Typical applications include dowel pins in radiator assemblies, sleeves in pump housings, and bearings in automatic transmissions. The product is temperature-resistant up to 230°C, with strength increasing with temperature. For steel applications, it can achieve a shear strength of 3800 psi. This product is suitable for cylindrical assemblies with a clearance of less than 0.2 mm. It prevents fretting and corrosion in metal assemblies, while also preventing leaks and is certified according to DVGW (EN751-1).

Kaedah aplikasi: Sistem penyaluran; Manual
Applications:For high temperature applications; For slip fitted parts; Retaining
Warna:Hijau
Jenis pengerasan:Pengerasan anaerobik
Fixture time:60.0 min.
Pengisian jurang:0.15 mm – 0.25 mm
Key characteristics:Cure speed: slow cure; Gap filling; Strength: medium to high strength; Temperature: high temperature; Viscosity: high viscosity
Jumlah komponen:1 bahagian
Operating temperature:-55.0 °C – 230.0 °C (-65.0 °F – 450.0 °F)
Bentuk fizikal: Cecair
Disyorkan untuk digunakan dengan: Logam: keluli
Shear strength, Steel:26.0 N/mm² (3800.0 psi)
Viscosity:8000.0 mPa·s (cP)

Keterangan Produk

LOCTITE 620 is a one-component, anaerobic-curing retaining compound formulated for bonding cylindrical parts—such as shafts, gears, and bushings—where high strength and elevated temperature performance are required. The compound cures when confined between close-fitting metal surfaces in the absence of air, preventing loosening and leakage caused by shock, vibration, or thermal cycling. It is well-suited for high-temperature applications with service ranges up to approximately +230 °C (450 °F).

Ciri-ciri Utama & Manfaat

  • High-strength bond: shear strength around 26 N/mm² on steel.

  • High temperature resistance: operating temperature from –55 °C up to +230 °C (–65 °F to +450 °F).

  • Gap filling capability: fills joint gaps of about 0.15 mm to 0.25 mm (0.006″-0.01″).

  • Tolerant of industrial environments: designed for cylindrical assemblies subject to shock and vibration.

  • One-part system, no mixing required—simplifies process integration.

Aplikasi / Arahan Penggunaan

  1. Surface Preparation: Clean mating surfaces thoroughly. Use appropriate solvent or degreaser.

  2. Permohonan:

    • For slip-fit assemblies: Apply adhesive to the leading edge of the shaft and to the bore of the housing; assemble with rotation for even distribution.

    • For press-fit assemblies: Apply 360° bead on both surfaces, assemble under press.

  3. Curing / Handling: The product cures once confined between metal surfaces and air is excluded. Allow proper time for full cure before placing into service.

  4. Disassembly / Repair: To separate bonded parts, apply localized heat (~250 °C) and use mechanical methods or appropriate solvent/cleaning.

  5. Tips & Warnings: Avoid excess adhesive, ensure proper gap clearance, clamp or fixture parts as required until initial handling strength is achieved.

Aplikasi Tipikal

  • Securing bushings, bearings, and sleeves in housings

  • Retaining shafts, gears, pulleys in automotive transmissions, pump housings

  • High-temperature service applications where conventional adhesives or mechanical press fits may fail

  • Assemblies exposed to vibration, shock, or thermal cycling

Soalan Lazim

Q1: What clearance gap can LOCTITE 620 handle?
A1: It is suitable for gaps of approximately 0.15 mm–0.25 mm.

Q2: What is its maximum operating temperature?
A2: Up to around +230 °C (450 °F) under appropriate conditions.

Q3: Does this product work on stainless steel or plated surfaces?
A3: Yes. Though cure speed may vary, it is designed for cylindrical metal assemblies including passive substrates.

Q4: How long until full strength is developed?
A4: Full cure time varies based on substrate, clearance, and temperature—typically 24 hours under standard conditions.

Produk berkaitan